(19)
(11) EP 2 067 989 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.12.2011 Bulletin 2011/49

(43) Date of publication A2:
10.06.2009 Bulletin 2009/24

(21) Application number: 08170079.1

(22) Date of filing: 27.11.2008
(51) International Patent Classification (IPC): 
F03D 7/02(2006.01)
 F03D 7/04(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 06.12.2007 US 952055

(71) Applicant: General Electric Company
Schenectady, NY 12345 (US)

(72) Inventors:
  • Kammer, Leonardo Cesar
    Niskayuna, NY 12309 (US)
  • Cardinal, Mark
    Altamont, NY 12009 (US)
  • Oing, Hubert
    14169 Berlin (DE)

(74) Representative: Bedford, Grant Richard 
Global Patent Operation - Europe GE International Inc. 15 John Adam Street
London WC2N 6LU
London WC2N 6LU (GB)

   


(54) System and method for controlling a wind power plant


(57) An apparatus and method for extending the power-capture region of a wind turbine (100) during certain operating conditions is disclosed. The actual set point of an operational parameter is selected so as to be maintained at a predetermined number of standard deviations away from an operating limit during certain operating conditions. For example, the operational parameter may be a rotor/generator speed and the operating condition may be a mean wind speed that exceeds a predetermined wind speed.







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